Based on GA, a method orienting to static behaviors of TRSCS is put forward to optimize both prestresses and cross-sectional areas of members for the minimum structural self-weight.

• 基于遗传算法，提出了以结构自重为目标函数，以预应力数值和构件截面为设计变量的索杆张力结构向静力性能的优化设计方法。